The largest ships of the VLOC class, above 300,000 dwt, carry iron ore between Brazil and global markets (mostly Europe and Asia).

Due to their size there are only a comparatively small number of ports around the world with the infrastructure to accommodate such vessel size.

Recently, the Brazilian mining company Vale ordered ships with a DWT of just over 400.000 tonnes forming their own category: Valemax.
The Valemax category is slightly larger than the Chinamax category with a DWT of around 380.000 tonnes.